1020204512225 has 48 divisors (see below), whose sum is σ = 1347519515136. Its totient is φ = 764842176000.

The previous prime is 1020204512191. The next prime is 1020204512237. The reversal of 1020204512225 is 5222154020201.

It is not a de Polignac number, because 1020204512225 - 2¹² = 1020204508129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020204512194 and 1020204512203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5966117 + ... + 6134733.

It is an arithmetic number, because the mean of its divisors is an integer number (28073323232).

Almost surely, 2^{1020204512225} is an apocalyptic number.

It is an amenable number.

1020204512225 is a deficient number, since it is larger than the sum of its proper divisors (327315002911).

1020204512225 is a wasteful number, since it uses less digits than its factorization.

1020204512225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168906 (or 168901 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 1020204512225 its reverse (5222154020201), we get a palindrome (6242358532426).

The spelling of 1020204512225 in words is "one trillion, twenty billion, two hundred four million, five hundred twelve thousand, two hundred twenty-five".